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A coomb was 16 stone (100 kg) for barley and 18 stone (110 kg) for wheat. The US grain markets quote prices as cents per bushel , and a US bushel of grain is about 61 lb (28 kg), which would approximately correspond to the 4-bushel coomb (4 × 61 lb = 244 lb ≈ 111 kg).
The Winchester bushel is the volume of a cylinder 18.5 in (470 mm) in diameter and 8 in (200 mm) high, which gives an irrational number of approximately 2150.4202 cubic inches. [4] The modern American or US bushel is a variant of this, rounded to exactly 2150.42 cubic inches, less than one part per ten million less. [ 5 ]
Indeed, the bushel, the best-known unit of dry measure because it is the quoted unit in commodity markets, is in fact a unit of mass in those contexts. Conversely, the ton used in specifying tonnage and in freight calculations is often a volume measurement rather than a mass measurement.
From 1833 the rupee and tolā weight was fixed at 180 grains, i.e. 11.66382 grams. Hence the weight of 1 maund increased to 37.324224 kilogram. [ 3 ] Traditionally one maund represented the weight unit for goods which could be carried over some distance by porters or pack animals.
In weight it was equal to 32 pounds (14.7 kg) in Portugal and 25 pounds (11.5 kg) in Spain. The unit is still used in Portugal and Spain by cork merchants and pig farmers. Arroba and bushel as weight units are similar (15 kg).
US dry barrel: 7,056 cubic inches (115.6 litres; 3.3 US bushels) . Defined as length of stave 28 + 1 ⁄ 2 in (72 cm), diameter of head 17 + 1 ⁄ 8 in (43 cm), distance between heads 26 in (66 cm), circumference of bulge 64 in (160 cm) outside measurement; representing as nearly as possible 7,056 cubic inches; and the thickness of staves not greater than 4 ⁄ 10 in (10 mm) [2] (diameter ≈ ...
The Oxford English Dictionary has a definition of "bag" as "A measure of quantity for produce, varying according to the nature of the commodity" and has quotations illustrating its use for hops in 1679, almonds in 1728 (where it is defined by weight as "about 3 Hundred Weight" i.e. 336 pounds (152 kg) in Imperial units) and potatoes in 1845 ...
The hobbit was defined as a measure of volume, two and a half imperial bushels, but in practice it was often used as a unit of weight for specific goods. [1] According to George Richard Everitt, Inspector of Corn Returns for Denbigh in northern Wales, when examined by the House of Commons in 1888, grains were sold by the hobbit, measured by weight.